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Mr Don Rodgers Project 2613-100 03 <br /> February 19, 1999 <br /> Page 3 <br /> (ug/L.) and 1,150 ug/L, respectively MTBE was below laboratory detection limits using USEPA <br /> Methods 8020A Modified and 8260 The oxygenates tertiary butanol, DIPE, ETBE, and TAME <br /> were also below laboratory detection limits Results of laboratory analyses are presented in the <br /> Table 1 <br /> REMEDIATION SYSTEM STATUS. FOURTH QUARTER 1998 <br /> The soil vapor extraction system will use a catalytic oxidizer to abate soil vapors extracted from <br /> wells VW-1 through VW-4 Construction and system installation activities occurred during the <br /> fourth quarter 1998 System start-up will occur once the approved permit to operate is received <br /> from the San Joaquin Valley Air Pollution Control District Pinnacle submitted the Authority to <br /> Construct (ATC) permit during the third quarter 1998 However, since the site is located within <br /> 1,000 feet of a school, public notification is required <br /> CONCLUSIONS <br />. Analytical results of petroleum hydrocarbons were generally consistent with previous sampling <br /> events Groundwater elevation decreased 107 feet from the previous sampling event (August <br /> 1998) <br /> Pinnacle will continue to perform quarterly groundwater sampling The next sampling event is <br /> tentatively scheduled for February 1999 The SVE system will begin operation upon receipt of <br /> the ATC permit <br /> Please call if you have questions regarding this report or any aspect of the project <br /> Sincerely, <br /> Pinnacle <br /> S <br /> Mark Capps, 6561 AyJoh RG 5867 <br /> Project Geologist upervisor <br /> SAC\E 1RODGERSIQTRLYIRDGRQ498 DOC-98Vsg 1 Pumae& <br /> Rev 0,2/19/99 <br />